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Welding process for photovoltaic industry battery piece stress-free welding equipment

A technology of welding equipment and welding process, which is applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc. It can solve the problems of large amount of glue, low efficiency of glue dispensing, poor post-stress, etc., and achieve uniform glue application , good consistency, and the effect of reducing stress difference

Pending Publication Date: 2022-05-17
深圳光远智能装备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a welding process for stress-free welding equipment for cells in the photovoltaic industry, so as to solve the problem that the post-stress difference proposed in the above-mentioned background technology is too large, the cells will bend more, and the dispensing method is inefficient. The problem of large amount of glue

Method used

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  • Welding process for photovoltaic industry battery piece stress-free welding equipment
  • Welding process for photovoltaic industry battery piece stress-free welding equipment
  • Welding process for photovoltaic industry battery piece stress-free welding equipment

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Embodiment 1

[0031] A welding process for stress-free welding equipment for cells in the photovoltaic industry, comprising the following steps:

[0032] Step 1: Visual positioning of the cell, set the cell on the welding panel, and the welding panel is provided with protrusions to prevent the cell from moving, limit the position of the cell, and take pictures through the camera, after the visual system analysis Send positioning data to the motion system to complete the battery positioning;

[0033] Step 2: Glue printing on the front and back sides, blow off the dust and impurities on the side of the cell to be printed with a spray gun, and at the same time use a glue machine to evenly coat the epoxy resin in strips on the designated position on the front or back of the cell;

[0034] Step 3: laying a ribbon on one side of the cell, laying a ribbon on the front or back of the cell that has been glue-printed in step 2, and bonding the ribbon to the front or back of the cell through glue;

...

Embodiment 2

[0040] A welding process for stress-free welding equipment for cells in the photovoltaic industry, comprising the following steps:

[0041] Step 1: Visual positioning of the cell, set the cell on the welding panel, and the welding panel is provided with protrusions to prevent the cell from moving, limit the position of the cell, and take pictures through the camera, after the visual system analysis Send positioning data to the motion system to complete the battery positioning;

[0042] Step 2: Glue printing on the front and back sides, blow off the dust and impurities on the side of the cell to be printed with a spray gun, and at the same time use a glue machine to evenly coat the acrylic resin in strips on the designated position on the front or back of the cell;

[0043] Step 3: laying a ribbon on one side of the cell, laying a ribbon on the front or back of the cell that has been glue-printed in step 2, and bonding the ribbon to the front or back of the cell through glue; ...

Embodiment 3

[0049] A welding process for stress-free welding equipment for cells in the photovoltaic industry, comprising the following steps:

[0050]Step 1: Visual positioning of the cell, set the cell on the welding panel, and the welding panel is provided with protrusions to prevent the cell from moving, limit the position of the cell, and take pictures through the camera, after the visual system analysis Send positioning data to the motion system to complete the battery positioning;

[0051] Step 2: Glue printing on the front and back sides, blow off the dust and impurities on the side of the cell to be printed with a spray gun, and at the same time use a glue machine to evenly coat the polyurethane resin in a strip shape on the designated position on the front or back of the cell;

[0052] Step 3: laying a ribbon on one side of the cell, laying a ribbon on the front or back of the cell that has been glue-printed in step 2, and bonding the ribbon to the front or back of the cell thro...

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Abstract

The invention belongs to the technical field of photovoltaics, and particularly relates to a welding process for photovoltaic industry battery piece stress-free welding equipment, which comprises the steps of battery piece visual positioning, front and back glue printing, welding strip laying on one side of a battery piece, welding strip laying on the other side of the battery piece, glue curing, string manufacturing and the like. Glue is adopted to assist glue connection welding, the welding strip is welded to the surface of the battery piece through glue, a buffer strip is provided, the stress is small, the stress difference generated between the battery piece and the welding strip can be reduced to the maximum extent, the reject ratio of sealing-off, piece breaking and the like is reduced, a battery piece welding point is smaller than a dense grid welding point, welding point silver paste is reduced, and the production efficiency is improved. Meanwhile, glue is applied in a printing mode, the glue amount and shape can be accurately controlled by controlling the shape and size of openings of the screen printing plate, and glue applying uniformity and consistency are good.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a welding process used for stress-free welding equipment for battery sheets in the photovoltaic industry. Background technique [0002] Under the energy crisis, the photovoltaic industry is developing rapidly. The key to further promoting photovoltaic applications is to improve the photoelectric conversion efficiency of solar cells and reduce the production cost of cells. The welding process in the existing cell production process is mostly divided into two types: [0003] Traditional dense grid welding process: high-temperature packaging technology is used for welding, that is, the flux is coated on the ribbon, and the solder on the surface of the ribbon is melted by heating to fix the ribbon on the surface of the cell; the solder ribbon and the cell are directly welded and packaged process, and the heating temperature is high. As the thickness of the cells becomes thinn...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L31/05B41M1/12B41M7/00B23K26/21B23K26/60B23K101/36
CPCH01L31/1876H01L31/0504B41M1/12B41M7/009B41M7/0081B23K26/21B23K26/60B23K2101/36Y02E10/50
Inventor 朱光万坤峰
Owner 深圳光远智能装备股份有限公司